Siemens 7MF4233 series User Manual

UMSITRAPDS3-1 Model Designations and Specifications
November 2005
9-21
9.3 SPECIFICATIONS
The following specifications are for all transmitter models except as noted. Table 9-15 is for Pressure and
Differential Pressure models. Table 9-16 is for Absolute Pressure and Filling Level models.
TABLE 9-15 Specifications, Pressure and Differential Pressure Models
Device type: Pressure Differential pressure
7MF4033 7MF4433 / 7MF4533
Application range
See Table 9-17 See Table 9-18
Function
Measurement principle Piezoresistive
Input
Measurement variable Pressure Differential pressure and flow
Measurement range
 Span (continuously adjustable) 0.15 to 5800 psi (6 ranges)
Nominal pressure (PN) 470 psi 0.4 to 8 inH
2
O (1 range)
Nominal pressure (PN) 2325 psi 0.4 inH
2
O to 435 psi (6 ranges)
Nominal pressure (PN) 6090 psi 1 inH
2
O to 435 psi (5 ranges)
 Lower measurement limit -100% of maximum span
- 435 psi measuring cell -33 % of maximum span
- Measuring cell with silicone oil filling 12 inH
2
O (absolute) 12 inH
2
O (absolute)
- Measuring cell with inert filling liquid
for process temp. -20 °C < ϑ < 60 °C
12 inH
2
O (absolute)
for process temp. +60 °C < ϑ < 100 °C 12 inH
2
O (abs) + 8 inH
2
O (abs) · ((ϑ - 60 °C) / °C)
(maximum +85°C for 435 psi meas. cell)
 Upper measurement limit
+100 % of maximum span, (maximum 2325 psi in oxygen measurement and
inert filling liquid 2325 psi)
 Start of scale (continuously adjustable) Between the measuring limits
Output
Output signal 4 to 20 mA
 Lower limit (continuously adjustable) 3.55 mA, factory set to 3.84 mA
 Upper limit (continuously adjustable) 23.0 mA, factory set 20.5 mA or optionally 22.0 mA
 Ripple (without HART communication)
I
pp
≤ 0.5% of maximum output current
 Electric damping
- adjustable time constants (T
66
) 0 to 100 s, in steps of 0.1 s, factory set to 0.1 s
 Current transmitter Adjustable 3.55 to 23 mA
 Failure signal Adjustable 3.55 to 23 mA
Load
 without HART communication
R
B
≤ (U
H
- 10.5 V) / 0.023 A in Ω, U
H
: power supply in V
 with HART communication
R
B
= 230 to 500Ω (HART-Communicator) or R
B
= 1100Ω (HART-
Communicator)
Characteristic Linear forward or reverse acting
or square root forward
Measuring accuracy
Reference conditions
Forward acting, zero based, process diaphragm stainless steel; for flange
level flush mount, silicone oil filling and room temperature 25 °C
r = maximum span / set span = span ratio

Siemens 7MF4233 series Specifications

General

Brand	Siemens
Model	7MF4233 series
Category	Transmitter
Language	English