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DIN Signal transmitters for load cell, process, pulse and temperature |
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High precision signal transmitters which are PC-programmable and only 22.5mm wide. We can also supply them pre-configured for you, so you only need to connect.
They are ideal for use in most industrial measurements, catering for 4 or 6 wire load cells, 4-20mA and 0-10V process signals, DC voltages up to 600V and DC current up to 5A.
They also include pulse input versions for total, rate, period, phase angle and quadrature. |
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Models |
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Load Cell input transmitter with 4-20 mA, 2 alarm & RS232/RS485 output |
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- 4 or 6 wire load cell connection. 10v 120mA Excitation supply.
- 5V at 100mA is user selectable.
- LT20-WM1 = 85-265V AC, standard software
- LT21-WM1 = 10-48V DC, standard software
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DC input transmitter (4-20mA, 0-10V, 1-5V, 5A, 600V) with 4-20 mA, 2 alarm & RS232/RS485 output |
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- 5 selectable voltage input ranges from 0-200mV to 0-600V and
- 4 selectable current input ranges from 0-2mA to 0-5A.
- LT20-P = 85-265V AC, standard software
- LT21-P = 10-48V DC, standard software
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PT100 input transmitter with 4-20 mA, 2 alarm & RS232/RS485 output |
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- LT20-385C = 85-265V AC, standard software
- LT21-385C = 10-48V DC, standard software
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Pulse input rate/total transmitter with 4-20 mA, 2 alarm & RS232/RS485 output |
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- LT60-FR = 85-265V AC, standard software
- LT61-FR = 10-48V DC, standard software
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Serial input RS232/485 transmitter with 4-20 mA, 2 alarm & RS232/RS485 output |
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- LTS60 = 85-265V AC, standard software
- LTS61 = 10-48V DC, standard software
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Thermocouple input transmitter with 4-20 mA, 2 alarm & RS232/RS485 output |
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- LT20-KC = 85-265V AC, standard software
- LT21-KC = 10-48V DC, standard software
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Common Specifications |
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Analogue Output (standard) |
Output Levels |
4-20 mA, 0-20 mA, 0-10 Vdc, -10 to +10Vdc (user selectable) |
Compliance at 20 mA |
10V (0-500Ω load) |
Compliance at 10V |
2 mA (5 kΩ or higher load) |
Output Resolution |
16 bits (65,536 steps) |
Output Accuracy |
0.02% of output span plus conversion accuracy |
Output Isolation |
250V rms working, 2.3 kV rms per 1 minute test |
Step response time |
50 ms |
Serial Data Output (standard) |
Signal Types |
RS232 or RS485 (half or full duplex), jumper selectable |
Data Rates |
300, 600, 1200, 2400, 4800, 9600, 19200 baud |
Output Isolation |
250V rms working, 2.3 kV rms per 1 min test |
Serial Protocols |
Modbus RTU, Modbus ASCII, Laurel ASCII |
Modbus Compliance |
Modbus over Serial Line Specification V1.0 (2002) |
Ethernet Connector |
RJ45 jack for 10/100 Base-T Ethernet cable |
RS232/485 Connector |
Screw terminals for easy daisy chaining |
Digital Addresses |
247 for Modbus, 31 for Laurel ASCII |
Dual Relay Output (standard) |
Relay Type |
Two solid state relays, SPST, normally open, Form A |
Load Rating |
120 mA at 140 Vac or 180 Vdc |
Power Input |
Standard Power |
85-264 Vac or 90-300 Vdc (DC operation not ETL certified) |
Low Power Option |
10-48 Vdc or 12-32 Vac |
Power Frequency |
DC or 47-63 Hz |
Power Isolation |
250V rms working, 2.3 kV rms per 1 min test |
Power Consumption |
2W typical |
Mechanical |
Dimensions |
129 x 104 x 22.5 mm case |
Mounting |
35 mm rail per DIN EN 50022 |
Electrical Connections |
Plug-in screw-clamp connectors |
Environmental |
Operating Temperature |
0°C to 55°C |
Storage Temperature |
-40°C to 85°C |
Relative Humidity |
95% at 40°C, non-condensing |
Cooling Required |
Mount transmitters with ventilation holes at top and bottom. Leave 6 mm (1/4") between transmitters, or force air with a fan. |
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