Calibration and Adjustment Instructions for MC5 Multifunction Calibrator
For Main Firmware Version 1.90
Page 9/16
Adjusting the Pressure Measurement of a Pressure Module
(Measurement Range Varies Depending on the Pressure Module)
Quantity:
Pressure
Function/Port:
P1…, P2…, P3…, PB…, EXT…
(depending on the selected/available modules)
Use a dead weight tester and connect it to the pressure
module to be adjusted.
Adjustment Points
The span adjustment point range for all gauge pressure
modules is 60 … 100 % of span. The zero adjustment
point is zero.
Ensure that the input connector of the gauge pressure
module is not connected to anything. Move the field
pointer to
Zero Reference Value
field in the calibrator
and enter the zero point value.
Connect the dead weight tester and generate a pressure
near the maximum span value. Move the field pointer to
Span Reference Value
field in the calibrator and enter
the span value.
When ready, select either another
Quantity
and
Func-
tion/Port
combination or save the adjustment result as
described in chapter
Saving Adjustment Data
on page
16.
F i e l d
M E N U
C a l i b r a t i o n
M o d e
1 7 . 1 0 . 2 0 0 2 1 0 : 4 0
P r e s s u r e
P 2 : I N T 2 0 C / - 1 0 0 . . . 2 0 6 8 k P a g
g a u g e
k P a
1 8 0 0 . 2 2
Z e r o R e f e r e n c e V a l u e
S p a n R e f e r e n c e V a l u e
0 . 0 0 0 0 0
? ? ? ? ? ? ?
Dead Weight Tester
kPa
1800.0820
T / C , L o w V
4 - w m e a s
R , R T D
3 & 4 - w m e a s
V ,
I
,
+ 2 4 V
I
m e a s / s i n k
L o w V
H A R T ®
T / C I N T . R J
T / C O R E X T
W I R E S O N L Y
2 - w x m t r
V , ,
?
M E A S U R E
O U T P U T
S E N S O R M E A S U R E & S I M U L A T E
E T
E
M a x i n p u t :
6 0 V D C / 3 0 V A C
M
U
L
T
I
F
U
N
C
T
I
O
N
C
A
L
I
B
R
A
T
O
R
Adjustment Points for a Barometric Module
The barometric module's zero correction point range is 800 … 1200 mbar (11.6 … 17.4 psi). The
span correction point range is the same but there should be at least 200 mbar abs (approx.
2.9 psi abs) difference between the used zero adjustment and the used span adjustment point.
The connector for the Barometric Module is on the back side of the calibrator. The thread is M5.
Note.
Usually a one point trim is enough for adjusting the barometric module. This is done by comparing the atmospheric
pressure readout of the calibrator’s barometric module to the readout of a more accurate barometric pressure indicator.
When the correct barometric pressure is entered, the calibrator actually adjusts the zero point so that the readout for
the current atmospheric pressure is the same as the entered value.
