Appendix d: specifications – Despatch MIC1162 Hi-limit User Manual
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APPENDIX D: SPECIFICATIONS
 
INPUT SPECIFICATIONS 
 
General 
 
Input Sample Rate: 
Four per second
Input Resolution:
14 bits approximately
Input Impedance:
Greater than 100M ohm resistive (except for DC mA 
and V inputs) 
Isolation:
Universal input isolated from all outputs except SSR at 
240 VAC. 
 
Thermocouple 
 
Types: 
R, S, J, T, K, L, B and N
Calibration:
Complies with BS4937, NBS125 and IEC584.
Sensor Break Protection:
Break detected within 2 seconds. Limit Relay set to 
OFF; alarms operate as if the process variable has 
gone over-range. 
 
RTD and DC mV 
Type and Connection: 
Three-wire Pt100
Calibration:
Complies with BS 1904 and DIN43760.
Lead Compensation:
Automatic
Sensor Break Protection:
Break detected within 2 seconds. Limit Relay set to 
OFF (0% power); alarms operate as if the process 
variable has gone under-range. 
 
DC mA and DC V 
Scale Range Maximum: 
-1999 to 9999
Scale Range Minimum:
-1999 to 9999
Minimum Span:
1 display LSD
Sensor Break Protection:
Applicable to 4-20mA, 1-5V, and 2-10V ranges only. 
Break detected within 2 seconds. Limit Relay set to 
OFF; alarms operate as if the process variable has 
gone under-range. 
Remote Reset 
 
Type: 
Voltage-free contact, closure required to reset.
 
 
