PTC-relay for the monitoring of dry transformers. Alarm 1 with relay in closedcircuit current mode for preliminary warning, releases at over-temperature at PTC-set 1 and serves at the same time as functional monitoring. Alarm 2 in operating current mode. Thus no wiping signal occurs when switching on the supply voltage on. Additional terminals enable comfortable wiring from supply voltage to relays K1 and/or K2.Changes from T221717 / T221718 to T228143 / T228144: Version with spring terminals RoHS/REACH compliantFurther information can be found in our customer information: "New terminals for K-type devices"Changes from T221715 / T221716 to T221717 / T221718: cURus, monitoring of sensors for short circuit an interrupt activatable, improved test functionFunctions2 PTC resistor sets2 output relays 1 change-over contact (co)/ 1 normally open contact (no)monitoring of sensors for short-circuit and break activatableTEST-button (delayed)LEDs for ON, alarm 1 and 2red LEDs for alarm 1 and alarm 2K-type housingHousing for mounting on DIN-rail 35 mm or wall-mount with screws M4Replacement for foreign device Elbag/Joppich TS-01 

The STWA1SEH is used where current flow has to be detected, e.g. to report exceeding of a limit, to switch off a machine or just report the current flow. The STWA1SEH has an integrated electronics with transistor-output. The limit is adjustable 2 - 10 A with a potentiometer. A LED displays the state.adjustable switching point 2-10 Abuilt-in LED displays state of the outputisolated transistor-output max. DC 40 V / 40 mAoutput van be directly connected to a digital input of a PLCintegrated diode for reverse voltage protectionelectrival connection via screwless pluggable terminals2-wire, no supply voltage requiredDIN-rail-mount or with screwsplug-in current transformer (Ø 11 mm)max. overload 100 A continuously, 300 A max. 10 s.

The MSF 220 V is particularly suitable for the temperature monitoring at dry transformers. 3 PTC-circuits with different nominal response temperatures (NRT) can be connected to this unit, one for controlling a fan (forced cooling) and two for alarms. Each PTC-circuit is monitored for break and short circuit. This reduces the probability of false alarms.3 PTC-circuitsMSF 220 VU for universal supply voltage AC/DC 24-240 Vintelligent control of fan (relay K0, 1 normally-open contact)ALARM 1 in closed-circuit current mode (relay K1, 1 change-over contact) for pre alarm. Signals also error in any sensor and interruption of supply voltage. ALARM 2 in operation current mode (relay K2, 1 changeover contact). No signal when switching on and off the supply voltage.all output relays potentially separated from each other.monitoring of sensor linesTEST-button (stop possible before ALARM 2)Simple testing with disconnectable monitoring of break and short circuit  (for 10 minutes).LEDs for ON, sensor error, Fan, ALARM 1 and ALARM 2UL recognized componentplug-in terminalshousing for mounting on DIN-rail or wall-mountmounting height 55 mmAccessory: Installation Frame ER4 for panel mount 

Temperature-Relays TR111V can be used as limit-switches or 2-point controllers with high repeat accuracy. 3 measuring-ranges, adjustable hysteresis and switching delay and the choice between operating- and closed-current principle of the relay make it a very universal device. Application: Protection from over-temperature in processes, plants and machines. Monitoring of temperatures in bearings. Controlling of temperatures in processes and plants.Overview of FunctionsMeasuring input 1x Pt 100 (RTD)/ 3-wireMeasuring ranges selectable:– -10...+40/ 0...100/ 0...200 °C– 0...100/ 0...200/ 200...300/ 300...400 °C1 limit adjustable 0...100 %switching delay adjustable 0,1...10 sOutput-relay 1 changeover-contact (co)Operating- or closed-current-mode selectable with bridgeSwitching off at sensor-shortcircuit or breakLEDs for display state of relayHousing for mounting in switchgear cabinets or fuseboxes, 35 mm wideMounting heigt 55 mmUniversal supply-voltage AC/DC 24-240 V 

PTC-relay for the application as a protection device against inadmissible heating up at electrical equipment in areas with explosive gases (zones 1 and 2) and areas with combustible dust (21 and 22), e.g. for direct temperature-monitoring of explosion-proof motors EEx e and EEx d. Vertically arranged terminals. Each terminal remains accessible even if all others are already occupied.Changes from T222451 to T228114; T222445 to T228116: Version with spring terminals RoHS/REACH compliantFurther information can be found in our customer information: "New terminals for K-type devices"FeaturesATEX directive 2014/34/EUSIL 1 according to IEC 61508PL c according to ISO 138491 PTC-resistor (thermistor) set, each 3 or 6 PTC-sensorsshort-circuit monitoring of sensor-circuitoutput-relay with 1 or 2 change-over contacts (co)2 LEDs for ON and ALARMK-housing, vertically arranged terminals housing 22.5 mm wideassembly on DIN-rail or with 2 screws M4 (option)UL Recognized ComponentOption: other supply voltages 

Relay for Energy Flow, optimization of self-consumption of self generated energy. Zero Export Device.The successor model to our popular EFR4001IP: Relays for energy flow measurement type EFR4002IP monitor the current flow between public power grid and generating plant / consumer. Operation is made comfortably via integrated webserver or directly at the device. Measured values are displayed neatly arranged at device on monitor. When the own power plant generates more power than actually is consumed it often is more economical to consume the excess energy self. This is especially reasonable when the difference is high between the price you pay to the grid provider and the price the provider pays for fed in energy.Many areas suitable for photovoltaics could not be used so far, since only a limited amount of power can be fed in at the grid connection point. In Germany new standards VDE-AR-N 4105:2018-11 allow exceeding this value by up to 66.6% or more installed capacity. The prerequisite for this is that the overbuilt power is consumed and not fed into the grid. In order to still ensure the stability of the system, this can be monitored with EFR4002IP. The same applies to zero export, when no energy at all may be fed into the grid. In this case, the device can be used as an energy flow direction sensor (EnFluRi). The EFR4002IP has been optimized for these functions.Data exchange with PPC (Power Plant Controller) possible.Functions:Switching of up to 3 consumers: the largest consumer, ranked 1-2-3 or combination of 3 consumers (7 levels)Switch on and off points. At which energy flow consumers are switched on and off againSwitch on and off delay of consumers, minimum on time.Control of heat pumps (SG-ready), battery chargers, invertersFor the use of Rogowski coils, please have a look at our EFR4002IPRNEW:Can be used for medium-voltage applications Connection of earthed medium-voltage transformers and series connected measuring devicesFor the German regulation "NELEV" and "EAAV"Suitable current transformers:Current transormers scaleable up to 2.400 A, secondary 1 A or 5 A (for Pav,e min. class 1) for example ZIEHL Type AS or WSCompact CTM7, 64/1 A, Kl. 1, 0,5 VAAccessory:Front Mounting Kit ER8 for mounting in control panels or doors

The grid- and plant protection device UFR1001E monitors voltage and frequency in plants for owngeneration of electricity. It complies with the requirements of VDE-AR-N 4120:2018-11, VDE-AR-N 4110:2018-11, VDE-AR-N 4105:2018-11, G98 and G99, ÖVE/ÖNORM E 8001-4-712:2009 and other standards for generators connected to the public grid.The UFR1001E is a dual-channel device and thus one-fault-proof. The function of the output-relays and of the connected switches can be monitored with feed-back contacts. When a connected switch does not switch off, the UFR does not switch on again. When a switch does not switch on it makes 2 restarts and thus improves availability of monitored plant.The limits are pre-set according to VDE-AR-N 4105-2011-08, VDE-AR-N 4105:2018-11 and other standards. They can be changed if required and be protected with a code and/or a seal.With a 2-step test both channels can be tested individually and the triggering time of connected switches is measured.The standby input allows a remote shutoff e.g. with a RCR.NEW: Our UFR1002IPWould you like to measure upt o 1,200 V?You need an interface (Modbus TCP)?You want a plain text LCD display?You need a seperate life contact?Then Take a look at the new UFR1002IP! 

The STWA1 current transformer is made to match the STW current monitor. One current transformer is required for each line being monitored. The STWA1 consists of a climate-proven sealed-in coil with toroidal tape core. The connection cables are permanently fixed to the transformer and are 1 m in length. The level of the current to be monitored is limited to 100 A continously, 300 A for max. 10s.In case of current of more than approx. 5 A, an LED can be triggered directly via the STWA 1 current transformer. Thus it's easy for users to visually monitor the current conduction in a line. The LED is protected by an anti-parallel diode or by its connection in series. A protective resistor is necessary depending on the LED used or the level of current being monitored.Weight: approx. 43 g

Measuring transducers MU2000K can measure DC- an AC-voltages up to 600 V and DC- and AC-currents 0-1/5 A.Preset measuring ranges can be selected. More measuring ranges (zero and full-scale) can be easily scaled. The output signals DC 0/2-10 V and 0/4-20 mA are insulated from measuring input and supply voltage. With its universal supply voltage AC/DC 24-240 V the measuring transducer can be connected to all common supply voltages.The MU2000K e.g. is suitable for measuring DC voltages and charging currents at batteries or for measuring AC voltages and currents in plants for own generation of energy.Changes from T236053 to T236056: Version with spring terminals RoHS/REACH compliantFurther information can be found in our customer information: "New terminals for K-type devices"Overview of functionsOutput signal 0-20mA and 0-10V or 4-20mA and 2-10VRated Supply Voltage AC/DC 24-240VInsulation between inputs, outputs and supply voltageInputsAC/DC 0 … 600 V (preset values: 0…30 V / 80…120 V / 0…150 V / 0…300 V / 0…600 V)AC/DC 0 … 5 A (preset values: 0…1 A / 0…5 A)In measuring ranges for AC also DC-signals can be measured. Negative signals will be measured as positive signals.Zeros and Full Scales for more measuring-ranges can be freely selected by the user.

The Pt100 thermostat TR250 monitors up to 3 sensors Pt100 (RTD), Pt1000, KTY83 KTY84 or thermistors (PTC) at the same time. Different types of sensors, e.g. Pt 100 and PTC can be monitored simultaneously.The unit is especially suitable for monitoring motors, generators and transformers.An other application is the use as a 2- or 3-step-controller with additional monitoring of over- or under-temperature. monitoring of differences in temperatures of 2 sensors  or  temperature controller for heat pumps. FunctionMeasuring an dmonitoring range -199...+850 °CResolution 0.1 °C for measuring range –19.9...99.9 selectable3 relay-outputs K1 to K3 with change-over-contactsUniversal power-supply AC/DC 24-240 VEasy settingStoring of values of MIN- and MAX temperatureAlarm counter for 3x99 alarms with display of sensor and elapsed timeCode-lock against manipulation of settingsReplacement for Elbag/Joppich TS-023 Sensor inputs: Pt 100 (RTD) or Pt 1000, 2- or 3-wire-connection, KTY83, KTY84Thermistors (PTC) each 1...6 in seriesMonitoring of short-circuit and breakDisplays:3 digit 7 segment display for temperature and programming3 LEDs for sensors, for alarms/relaysdisplay °C or °F selectable, resolution 0.1 °CSwitching functions:3 relayswarmest/coldest sensor switches relay3 LEDs for alarm/relayprogrammable for every relay:hysteresisautoreset or electronic reclosing lockdelay time for switching and switching backoperating- or closed current-modecyclic check of functionmonitoring of difference in temperature6 preset programs:Motor /generator 3x Pt 100transformer with 3x Pt 100transformer with 2x PTC and 1x Pt 100transformer with 2x PTC / 3x PTC3 x 1 alarm per sensorAccessory: Front mounting kit type ER4Alternative: Temperature relay Type TR640IP

The PTC-resistor trip device MSF220SE monitors the winding temperature of machines and equipment. Signals, that can be used as ”early warning" or ”malfunction" (switching-off), are transmitted as soon as the admissible limit temperature is exceeded.Two PTC-circuits can be connected to this unit. The integrated rise-delay time ensures a reliable mains voltage build-up.Function2 PTC resistor circuits, 1 to 6 PTC each (max. cold resistance of circuit 1500O each)potential-free contact for alarm 1potential-free contact for alarm 2voltage of pin 3 is connectet to pin 1 with a time delay of 2 sec., replacing an additional timing relay.alarm 3 for check of relay K3LED´s signal state of relays K1 and K2relay K3 picks up time-delayedTEST-button for ALARM 1 and ALARM 2NoteThanks to the delayed switching-on of the error message (approx. 2 s) after the switching-on, this device is especially suitable where an auxiliary voltage is not available and the secondary voltage of the monitored transformer is being used. The MSF220SE can furthermore be used advantageously when combining it with operating current releases. For additional devices, the control voltage is available at terminal 1 time-delayed. In case of a breakdown of the supply voltage, the control voltage is available at terminal 7 and can be used as a message. (Attention! This message will also be given for approx. 2 s. after switching-on.)Functional descriptionPTC-circuits in closed-circuit current principle. When the closed-circuit current flows, both output relays K1, K2 are picked up. Approx. 2 sec. after switching on supply power, relay K3 picks up time-delayed, closing the contact circuits at terminals 31, 14 and 31, 24. As soon as the temperature of the early warning has been reached, relay K1 releases (terminal 31, 12 closed), the alarm 1 is given. If the temperature of malfunction is reached, also relay K2 releases (terminal 31, 22 closed). This alarm 2 can be used to switch off the equipment. If the temperature drops to approx. 5 °C below the temperature of malfunction or early warning, the relays K1 and K2 resp. are switched on again.TEST: LED "ON" – flash -> +2 s -> Alarm 1 -> +3 s -> Alarm 2 

ZIEHL current-relays STW1000V2 monitor standardsignals from measuring transducers if a limit is exceeded. For monitoring of more than 1 signal, multiple relays can be connected in series (current) or in parallel (voltage). Measuring inputs for 0/4-20 mA and 0-10 V, adjustable hysteresis and switching delay and the choice between operating- and closed-current mode of the relay make it a very universal limit switch.ApplicationsMonitoring of different values in combination with measuring transducers, e.g. in machines and controls.Measuring inputs 0-20 mA / 0-10 V, switchable to 4-20 mA / 2-10 VLimit adjustable 0-100 %Hysteresis adjustable 5-30 %Start-up delay adjustable 0,1 ... 10 sSwitching delay adjustable 0,1 ... 10 sOutput-relay 1 changeovercontact (co)Operating- or closed-circuitmode for relay selectable with bridgeLEDs for display state of operationUniversal supply-voltage AC/DC 24-240 VHousing for mounting in switchgear cabinets or fuseboxes, 35 mm wide

NEW: For the German regulation "NELEV" and "EAAV"The grid decoupling relay UFR1002IP is the "big brother" of the UFR1001E and monitors voltage and frequency in three-phase and AC grids.With a color LCD display (German/English) and joystick, it is even easier to operate than the UFR1001E. Measured values and settings are clearly displayed. The device can be programmed, updates installed and the alarm memory read out via the integrated IP interface. The real-time clock (with power reserve) simplifies the traceability of the alarms. Up to 1,200 V can be monitored in conjunction with the VG1200 coupling device. The device has a two-channel, single-fault-safe design and thus meets the requirements of VDE-AR-N 4105:2018-11. The function of the connected switch is monitored. If monitoring is activated, the device does not switch on again if a switch-off error is detected.Limit values for different applications are preset. Where permitted, they can easily be changed. If the nominal voltage is changed, the device automatically adjusts the limit values. With the standby input, a remote shutdown can be implemented, e.g. with a ripple control receiver.Monitoring ofUnder/over voltage 15-520V (with ZIEHL VG1200 coupling device up to 1,200 V)Under/over frequency 45-65 HzVoltage quality (10-minute average)Vector shift 2-65°ROCOF, rate of change of frequency df/dt 0.100...5.000 Hz/sZero voltage U0 (ANSI 59v0)passive anti islanding protectionFeatures:single-fault-proof, with monitoring of connected switch (can be switched off when using the integrated switch of PV and battery convertersProgrammable restart attempts in the event of a switch-on error in the connected switchRelay K3 with programmable functions, including life contact, delayed switch-on signal for switches or error messagesResponse time adjustable 0.05 … 300,0 sSwitch-back time adjustable 0 … 6,000 sPreset according to VDE-AR-N 4105-2018-11 (Pr 1.02, Pr 1.08 + 1.09) and VDE-AR-N 4105-2011-08 (Pr 1.01)Preset according to VDE-AR-N 4110-2018-11 (Pr 1.11-1.14) and bdew guideline (Pr 1.03-1.06)automatic adjustment of the switching points when the nominal voltage is changedAlarm counter for 100 alarms (with trigger value, cause and date/time, time of restart)3 programmable digital inputsStandby counter and timer with standby on/off date/timeTest and simulation function with measurement of switch-off timesSealing option and code protection for settingsInterface ethernet TCP/IP, values available via modbus TCPSimple commissioning and programming thanks to preset basic programs and transmission via IP interfaceSupply voltage AC/DC 24-270 VHousing for DIN-rail-mount, 105 mm wide, mounting height 66 mmAccessory: Installation frame ER6 for panel mount

ZIEHL PTC-resistor relays protect motors, transformers, machines and equipment against thermal overload. With ZIEHL PTC Sensors MINIKA ® applied they offer best solutions for nominal response temperatures 60°C…180°C.ZIEHL PTC-resistor relays are designed for PTC-sensors according to DIN 44081 and DIN 44082. Therefor sensor and relays are exchangeable. PTC-resistor sensors are suitable for the installation into windings of electrical machines, bearings and transformers as well as to monitor the temperature of liquid media, airflow and gases.Used in conjunction, they provide a effectively and reliable protection in case ofblocking rotors, heavy starts, countercurrent operationundervoltage and phase failureincreased ambient temperature and hindered coolingThe MS220K2 monitors 2 PTC resistor sets at the same time. If a temperature rise occurs in one set, the appropriate output relay releases. With this relay, 2 PTC-sets can be independently monitored. Functional overview2 PTC-resistor sets, each 1...6 PTC resistors, or bimetal contactsoutput relays 2 x 1 change-over contact (co)LEDs for operation and alarmUL-Recognized Component 

The FRMU1000 is a speed-monitor, a frequency-monitor and a measuring-transducer in one device.2 limits with 1 relay each can be programmed for under- or overspeed, under- or overfrequency or each monitoring of a range (min/max).The input for monitoring of speed can evaluate signals from proximity-sensors 2- or 3-wire, npn- or pnp. The display can be scaled. Thus the real speed of a shaft can be displayed, even though there are several pulses per revolution, e.g. from a cogwheel.Application as Frequency-RelayMonitoring of frequencies in mains 16 2/3 to 400 Hz on maintaining a range (min/max).Application as Speed-RelayMonitoring of overspeed or underspeed, each with pre-alarm and alarm, monitoring of maintaining a range (min/max) or monitoring of stop at machines and equipment, e.g. at conveyors, escalators or lifts or for monitoring of drive-belts.Applications as Measuring Transducer (FRMU only)In addition, the FRMU can be used as measuring-transducer to convert the input-signal into a standard-signal 0/4-20 mA or 0-10 V. 

The MSF220VL is particularly suitable for monitoring of temperatures at dry transformers, when also the temperature of the core shall be measured. Monitoring of core temperature is especially required in rectifier transformers because of harmonics causing heat in the core.An intelligent control prolongs automatically the runtime of a cooling-fan, depending on the load of the transformer. Each PTC-circuit is monitored for break and short circuit. This reduces probability of false alarms. Relays in operating-current mode prevent from a trip-signal when switching on supply voltage.The device can be adapted to different applications with 4 programs:Fan-control - alarm - trip (winding) - trip (core)Alarm - trip (winding) - trip (core) - alarm (fault)Fan-control - alarm - trip (winding) - alarm (fault)Fan-control with hysteresis T1/T2 - alarm – trip (winding) - time relayOverview of functions4 inputs for PTCIntelligent control of fanAutomatic fan-test 1x / weekelectronic reclosing lock for alarms (trip) connectableMonitoring of sensorsTest-buttonSimple testing with disconnectable monitoring of break and short circuit (for 10 minutes)cURusLEDs for alarms, states of relays and sensorsHousing for mounting on DIN-Rail or wall-mount(option)Mounting height 55 mmUniversal supply voltage AC/DC 24-240 VDEWA-standard for DubaiAccessory: Front mounting kit type ER4

The basic function of the device is to detect whether a current is flowing in the supply line of one of several woodworking machines. If a current flow is detected, the device opens a valve on the machine's suction channel. At the same time, the extraction system is switched on. When a machine is switched off, the device closes the associated valve with a delay. If the last machine is switched off, the extraction system also stops after a delay.The current relay STW81V is an 8-channel AC current relay, designed for controlling of suction plants e.g. in the timber and plastics processing industry. When there is an AC-current >1A through one of up to 8 connected transformers type STWA1, the appropriate relay K1...K8 (1 x co) picks up and opens the slide valve of the machine. At the same time the relay K9 starts the central suction.Relays K1...K8 switch off 10s after the current flow through the appropriate transformer is 0. K9 switches off 0...60s (adjustable) after the current in all transformers is 0.ApplicationThe current relay STW81V is particularly suitable for the central control of slide valves in suction plants, which are to be operated dependent on operating condition of individual machines. It can control a central suction at the same time.single evaluation of 8 inputs with STWA1single evaluation of 8 inputs with current-sensor S1inputs for 8 potential-free contactsOR-evaluation of all circuits (K9)9 output relaysLED display for relays / inputsSwitching point adjustable 0,5 - 5 Aswitch-off delay of K9 adjustable 0 - 60 secondsswitch-off delay single relays 10 slast relay: K9 + 20 s

Measuring point change-over switches allow the connection of up to 16 measuring points to 1 measuring device, e.g. an analog input of a PLC.The inputs can be selected with a BCD-Code. Manual selection can be made with a code-switch. In automatic mode, the inputs are polled (tact-time adjustabe) and thus be displayed in succession. When using a measuring point change-over switch, only 1 measuring input is needed to collect multiple values.Especially with slowly changing signals like temperatures, measuring every other second is enough. Expensive inputs for Pt100 or 0-10 V/0-20 mA at PLCs can be saved.With the MUM16, alternatively 16 measuring points with common ground or 8 measuring points with separated ground can be switched.PLC-compatibel. Channelselection over 4 bit parallel (24 V), e.g. PLC or by a code-switchOptional switching + or -Enable-input for using multiple MUM in parallelMonitoring of up to 16 signals for one limit with only 1 limit switch16 channels (0/4 ... 20 mA, 0 ... 10V, Pt 100) with common ground8 double-channels (= Pt 100/ 3-wire and thermocouples)Simple configuration with 3 DIP-switchesSupply AC/DC 24-240 VLED-display for selected channelTact-time in automatic mode adjustable 0,5 ... 10 splug-in terminalsHousing for mounting in switchgear cabinets or fuse boxes, 140 mm wide, mounting height 55 mm

Temperature Relays TR660IP monitor up to 6 sensors for up to 7 limits. Different sensors can be connected at the same time, e.g. Pt 100 (RTD) and PTC thermistors. Typical applications are monitoring of motors, generators or transformers. An other application is the use as a two or more step controller with additional monitoring of over- or undertemperature or monitoring of differences in temperatures of 2 sensors.Preset programs allow easy setting e.g. monitoring of transformers with/without monitoring of temperature of core or with/without controlling a ventilator.If the evaluation "2 out of x" is activated with several connected sensors, an alarm is only triggered when the limit value is exceeded in 2 sensors. This prevents false alarms due to a fault in one sensor. Operation can be made at the device or with a standard browser via Ethernet.6 inputs for sensors Pt 100, Pt 1000 and PTC, mixed sensors possible7 alarms / relay outputsalarm 2 of x = alarm only when limit is exceeded in min. 2 sensorsmonitoring of difference of temperaturesmonitoring of rate of change of temperaturelogging of temperatures and historypreset programs for protection of motors, transformers and moreinterface ethernet TCP/IP, values available via modbus TCPprogramming with browser via TCP/IP or with joystick at devicecoloured LED display for clear display of temperatures and states of alarmsuniversal power supply AC/DC 24-270 VAccessory: Installation frame ER8 for panel mountTR660IP RS485:  interface RS485 (modbus RTU)TR660IP analog:  4 analog outputs 2x 0/4 - 20 mA and 2x 0/2 - 10 V, isolated from sensor inputs, individually programmable. 

With its 4 digit, 14 mm high display, Digital Panel meters of MINIPAN® 300- series allow the accurate display of different values in the range -1999 ... +9999.Only 3 designs cover the measuring of DC voltage and current, AC voltage and current and temperature with Pt 100- sensors (RTD).The display can be easily programmed by the customer (e.g. input 0-10 V --> display 0-350.0 ms or AC 0-1 A ---> 0- 400.0 A With the built-in universal power supply AC/DC 24-240 V it is especially versatile. 

Switching-Relays Typs TR 122 D(A) monitor the input-signal for 2 limits. The TR 122 DA transduces the measured temperature/resistance to a proportional DC-current. Applications of the TR 122 D(A) are:Monitoring of temperatures with pre-alarm and alarm in machines and plantsControlling of temperatures e.g. for heated sample gas lines or refrigerating plantsTransducer for Pt 100 (RTD) and resistance (TR 122 DA only)Overview of Functions1 input sensor, Pt 100 (RTD) or resistanceMeasuring ranges -199...850°C / 0...850 Resolution 0,1 °C / within the ranges -19,9...99,9 °C / 0-99,9 2 relay outputs (each 1 change-over contact)1 analog output 0/4-20 mA scaleable (TR 122 DA only, not potentially separated from the inputs)Universal power supply AC/DC 24-240 VStorage and display of the measured MIN- and MAX-values 

The Safety Temperature Limiter type STR 100 is an electronic thermostat monitoring the temperature of heating equipment and machinery. When the permitted temperature-limit is exceeded or in case of a malfunction, the STR 100 switches off without delay. An active reset must be made for a restart. The temperature limit is adjustable with a scaled potentiometer. An unintended or unauthorized adjusting of the limit is prevented through a lead-sealed transparent cover.With supply voltage switched on, the STR 100 operates in a changeable lockout mode and the relay must be started by a reset (manually with built-in reset button or external reset) to make contact (no) close. Applicable for plants with supervised operation. The mode of operation corresponds to type 2BJK according EN 60730/VDE 0631.The temperature is measured with a Pt 100 resistance temperature detector (RTD) according to EN 60751 / IEC 751. The process qualification in combination with the sensor must be proved. To fulfil affords for higher safety functionality the function has to be routine-tested periodically. The thermostat series STR 100 meets safety category 3 (Safety of machines EN 954-1, TÜV Rheinland documents T 24/00 + T103 2007 Z1 + T103 2007 E2). If safety approval is recommended only use listed RTD.Temperature LimiterA temperature-limiter is an equipment that switches of permanently (locked) after the limit has been exceeded. A reset (manually or with a tool) is possible after the temperature has fallen below switch-back point (limit minus hysteresis).Safety Temperature LimiterA safety temperature limiter is a limiter that fulfils in addition the requirements of extended safety according to DIN 3440. 

Temperature relay to protect transformers against excess temperature and to control a fan.The temperatures in the windings are monitored with three Pt 100 sensors. The core temperature can be monitored with a fourth sensor.The 4 alarms/output relays are used to control the fan, to signal an advance warning and to switch-off the transformer. Various programs facilitate using the alarm ideally for each application. Depending on the program, e.g. an extra relay is available for the fault message or for triggering due to exceeding the maximum core temperature.Other usesAlternatively, with the fourth sensor the temperature of the room the transformer is located in can be monitored and, with the alarm, the room ventilation can be controlled. The device can also be used for other tasks for temperature monitoringe.g., for motors.Overview of the functions4 Sensor inputs Pt 100 (RTD), 2 or 3-wire connectionLarge monitoring range -199…+850°C / -199...+999°F4 Alarms / Relays3-digit digital display (resolution 1°C / 1°F)4 LEDs sensor4 LEDs relay4 LEDs alarm1 LED errorControl voltage AC/DC 24-240 VClear displays and simple programmingMin and max sensor values can be savedCode lock against unintended / unauthorised changes to the settingsOptional RS 485 interface with Modbus RTU protocolEasySimulation for simple sensor value simulation 

The Pt 100 thermostat TR600 is a temperature controller and monitors up to six Pt 100 sensors at the same time. Six switching points and six relays permit almost any combination of switching action. It also can select the highest temperature of a group of three or six sensors. The temperatures of two sensors or groups of sensors can be issued to 2 analog outputs i.e. for remote displays or further evaluation. Programming is very variable and simple.Due to the fact that 6 type Pt 100 sensors can be connected, the unit is especially suitable for temperature monitoring wherever up to 6 different measuring points must be monitored simultaneously:motors and generators with simultaneous monitoring of bearings and coolant.transformers with additional monitoring of the core temperature also.power machines and plantsApprovalUL E377414 Process Control Equipment, Electrical - ComponentOverview of functionsMeasuring and monitoring range -199 ... +800 °C6 sensor inputs with 2- or 3-wire connection7 relay outputs with change-over contactAlarm 1 … 6 relay K1 (11/12/14) ... K6 (61/62/64)Sensor Error Relay K7 (71/72/74) monitors sensor break or sensor short circuit.2 analog outputs, 0/4...20 mA and 0/2...10 V, with individual scaling.Universal power supply. 2 ranges AC/DC 24-60V or AC/DC 90-240 VUniversal power supply AC/DC 24-240 VTerminal for USB-Stick for up- and downloads of sets of parameters and for firmware-updatesAccessory: Installation frame ER8 for panel mountAlternative: Temperature Relay Type TR660IP