Page 3
User Guide
Landmark Basic
Signal Processor
2 Specification
Input/Output accuracy:
0.4% of reading
Input/Output drift:
0.02% of span/°C
Signal retransmission current output:
4 to 20mA
Maximum current output load including cable:
500
W
Emissivity/Non-greyness monitor accuracy:
0.2% of emissivity current
Emissivity/Non-greyness output drift:
0.02% of span/°C
Averager ‘off’ response time:
2ms (10 to 90%)
Averager adjustment range:
175ms to 4s (10 to 90%) (typical)
Peak picker adjustment range:
5000% to 1% span/s (typical)
Peak picker response time*:
Set by averager response time
Peak picker remote reset characteristics:
Activated by a contact closure
(must be a floating and isolated
contact). Contact must be closed
for 20ms to reset the peak picker.
Power supply**:
24V to 30V a.c. (50 to 60 Hz)/30V
to 45V d.c. at 200mA. The supply
must be isolated, fused and short
circuit protected.
Vibration:
1g in any axis, 10 to 300Hz
Humidity:
0 to 99% non-condensing
Sealing:
IP20 to terminals, IP40 elsewhere.
Ambient temperature:
5 to 50°C in specification, 5 to 60°C
operating.
EMC immunity:
EN 50-082-2
EMC emission:
EN 50-081-1
* The averager function precedes the peak picker function in the signal path.
** A LAND DPU mains power supply is recommended.
