SZ1144
Refrigeration Temperature Monitor
Description
The SZ1144 is a microprocessor-based refrigeration monitoring and alarm interface designed to monitor up to four 1000 Ω platinum RTD temperature sensor inputs and up to two 4-20 mA inputs.
Features:
- Stand-alone or network operation
- Independently programmable high and low limits for each input
- Independently programmable manual or automatic alarm reset
- Change of state factor with programmable hysteresis
- 32 character LCD display
- Status LEDs
- Relay output to activate additional auxiliary communication devices or external alarm circuit
- Four RTD temperature inputs
- Two 4-20 mA analog inputs suitable for a broad variety of transducers
Call to order:
1-800-288-9383
Specs & Docs
Specifications:
General
Accuracy: +/- 0.5%
Programming: EIA RS485 interface
Display: 32 character LCD
Communications: RS485, half duplex
Memory backup: Non-volatile EEPROM, no battery required
Environmental
Operating temperature: 32 to 131°F (0 to 55°C)
Operating humidity: 0 to 100% RH, non-condensing
Storage temperature: 14 to 140°F (-10 to 60°C)
Electrical
Supply voltage: 24 VAC +/- 20%
Inputs: Four platinum RTDs, range: -40 to 60°F (-40 to +15.6°C) two 4-20 mA analog and two digital (dry contact)
Outputs: One digital (SPST dry contact, 24 VAC @ 1 A) configurable
Analog input impedance: 250 Ω
Common mode rejection: 100 db @ 60 Hz
Power Consumption: 5 VA max.
Specifications subject to change without notice.