Fridgewatch 2100 Controller Mk4
Section 3
Publication 3-58
Issue 1.1 : 01/08
Page 99 of 152
T
YPE
(R
ANGE
)
B
ASED ON
:
0
Channel NOT used and therefore NOT scanned or displayed
Gauge Pressure Transducer 0 mV to 100 mV, -1 to +(RANGE) bar g
or
Absolute Pressure Transducer 0 mV to 100 mV, 0 to +(AbsRANGE) bar abs. Use (RANGE) = (AbsRANGE-1)
-3
Fridgewatch 2100 displays
-1
RANGE
at 0 mV
at 100 mV
Gauge Pressure Transmitter 4 to 20 mA, 0 to +(RANGE) bar g
With a 5
Ω
shunt resistor fitted across the terminals.
-2
Fridgewatch 2100 displays
0.0
RANGE
at 4 mA
at 20 mA
= 20 mV across Fridgewatch 2100 terminals.
= 100 mV across Fridgewatch 2100 terminals.
Absolute Pressure Transmitter 4 to 20 mA, 0 to +(RANGE) bar abs
With a 5
Ω
shunt resistor fitted across the terminals.
-1
Fridgewatch 2100 displays
-1.0135
RANGE – 1.0135
at 4 mA
at 20 mA
= 20 mV across Fridgewatch 2100 terminals.
= 100 mV across Fridgewatch 2100 terminals.
Gauge Pressure or Any Other Transducer 0 mV to 100 mV, 0 to (RANGE)
1
Fridgewatch 2100 displays
-(RANGE)
0.0
+(RANGE)
at -100 mV
at 0 mV
at +100 mV
Temperature Transducer 0 mV to 100 mV, -(RANGE)/2 to +(RANGE)/2 (symmetrical about zero)
Fridgewatch 2100 displays
-(RANGE)/2
0.0
+(RANGE)/2
at 0 mV
at 50 mV
at 100 mV
or
Temperature Transmitter 0 mA to 20 mA, -(RANGE)/2 to +(RANGE)/2 (symmetrical about zero)
With a 5
Ω
shunt resistor fitted across the terminals.
2
Fridgewatch 2100 displays
-(RANGE)/2
0.0
+(RANGE)/2
at 0 mA
at 10 mA
at 20 mA
= 0 mV across Fridgewatch 2100 terminals.
= 50 mV across Fridgewatch 2100 terminals.
= 100 mV across Fridgewatch 2100 terminals.
Temperature Transmitter 4 to 20 mA, -(RANGE)/2 to +(RANGE)/2 (symmetrical about zero)
With a 5
Ω
shunt resistor fitted across the terminals.
3
Fridgewatch 2100 displays
-(RANGE)/2
0.0
+(RANGE)/2
at 4 mA
at 12 mA
at 20 mA
= 20 mV across Fridgewatch 2100 terminals.
= 60 mV across Fridgewatch 2100 terminals.
= 100 mV across Fridgewatch 2100 terminals.
Any Transmitter (Except Pressure) 4 to 20 mA, 0 to +(RANGE) bar g
With a 5
Ω
shunt resistor fitted across the terminals.
4
Fridgewatch 2100 displays
0
RANGE
at 4 mA
at 20 mA
= 20 mV across Fridgewatch 2100 terminals.
= 100 mV across Fridgewatch 2100 terminals.
NOTE
The (RANGE) value to be entered into the appropriate setting may not simply be the measuring range of the transducer or
transmitter, but may also include multiplication factors to produce values displayed in the required engineering units
subject to the limitation of the number of digits in the display (0.001 to 9999, auto-ranging).
Table 10 Transducer/Transmitter Types and Ranges
S46 Control variable: select P1 or P2
S46 = 1: P1 used for auto set point control of pressure or
temperature.
S46 = 2: P2 used for auto set point control of pressure or
temperature.