Fluke Biomedical 956A-201-M2 - Manual (Page 13)

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1.9 SPECIFICATIONS MODEL, 956A-201-M2
General specifications for the 956A-201-M2 UDR are listed below. The 956A-201-M2 is designed for
nuclear applications, and any repairs to it by personnel not qualified may void the nuclear rating. If a
problem develops, the UDR can either be returned to the factory for service or repaired by a qualified
technician.
Main Display Seven segment – three digits with backlighted
radiation units display, floating decimal point and
exponential setpoint entry
Bargraph Display
(Dynamic Range) Three segments per decade, .01 to 10 6 mR/h (24
segments) (green for norm, amber for warn, and red
for high)
Alarm Indicators HIGH Alarm (Red LED) – Flashing until acknowledged
WARN Alarm (Amber LED) – Flashing until
acknowledged
FAIL Alarm (Red LED) – Does not flash, automatically
resets
RANGE Alarm (Red LED), overrange/underrange –
Does not flash, automatically resets
Display Selection (Momentary Pushbuttons) HIGH, High Alarm Setpoint
WARN, Warn Alarm Setpoint
TEST, Initiates Trip Test Function (956A-201-M2)
Check Source Activates radioactive Check source and associated
green LED indicator. Momentary, non-latching
pushbutton operation
Alarm Ack. Alarm acknowledgment causes alarm indicators to go
to a steady on state after acknowledgment. Relays
will reset when radiation level drops below setpoint.
Internal jumper causes alarms to be reset
automatically when radiation level drops below
setpoint (no operator input required).
Power ON/OFF Alternate action pushbutton for AC power.
Relay Outputs
(Fail-safe operation) HIGH Alarm – DPDT rated 5 A @ 120 Vac (one set
120 Vac powered for use with optional local alarm)
WARN Alarm – DPDT rated 5 A @ 120 Vac
FAIL Alarm – DPDT rated 5 A @ 120 Vac
AUX (Fail) – DPDT rated 5 A @ 120 Vac (956A-201-
M2)
DC rating for all relays is 5 A @ 29 Vdc
NOTE: 120 Vac has been internally wired to the
Alarm, and AUX relay contacts, connector P2. Refer
to Loop Diagram S174014C-102.
High Voltage Output 300 Vdc – 1800 Vdc @ 0.4 mA
Detector Check Source Power +15 Vdc @ 20 mA
Analog Outputs 4 to 20 mA (2) (500 Ω load each, max.) and 0 to 10
Vdc (1 K Ω load min.), logarithmic. May be scaled for
any one decade (minimum) or to the full range of the
detector (maximum).
0 to 10 mV (1 K
Ω load min) is available from the 942-
200-95-M1 Analog Output Option Board (956A-201-
M2).
Remote Alarm Ack Input Optically isolated DC input