Samson 3372 - Operation

4 T 8313 EN
Table1: Technical data
Table1.1: Electric data for Type3372
Type3372 With integrated i/p converter WithType3725Positioner(directattachment)
1)
Actuator area 120cm² 120cm² 350cm²
Rated travel 15mm 15mm 15mm 30mm
Function (mounted device)
Conversion of a DC signal into a pneumatic output
signal for measuring and control tasks
Electropneumatic positioner with self-calibrating,
automatic adaptation to valve and actuator
Reference variable 4 to 20mA (reverse polarity protection) 4 to 20mA (reverse polarity protection)
Split-range operation – 4 to 11.9mA and 12.1 to 20mA
Static destruction limit <–2V or >+7V ±33V
Minimum current 3.6mA 3.8mA
Load impedance ≤7V (300Ω at 20mA) Max. 6.3V
Span adjustment 25% of travel range using potentiometer Self-adjusting
Direction of action Increasing/increasing, xed
Adjustable: increasing/increasing or increasing/
decreasing
Tight-closing function
Stem extends: deactivation at ≤4.08mA (≤0.5%)
w<1% and w>99%
Stem retracts: activation at ≥19.95mA (≥99.5%)
Operation Can be deactivated using a jumper
Can be individually activated or deactivated using ca-
pacitive keys (P9 or P10)
Hysteresis ≤1% ≤0.3%
Variable position ≤7% –
Switching accuracy 0.14mA –
Air consumption in steady
state
When w= 100%:
6bar ≤200l
n
/h · 4bar ≤160l
n
/h
≤100 l
n
/h with a supply pressure up to 6bar and a
signal pressure of 0.6bar
Air output
capacity
To ll actuator
with air
–
When Δp= 6bar: 8.5m
n
³/h
When Δp= 1.4bar: 3.0m
n
³/h
K
Vmax
(20°C)= 0.09
To vent actuator –
When Δp= 6bar: 14.0m
n
³/h
When Δp= 1.4bar: 4.5m
n
³/h
K
Vmax
(20°C)= 0.15
Temperature range
2)
–30 to +70°C –25 to +80 °C
3)
Degree of protection IP54 or IP65
4)
IP66
5)
Electropneumatic or pneumatic
connection
Connected inside actuator Separate from actuator (in the positioner)
Electromagnetic compatibility
Requirements according to EN61000-6-2 and
EN61000-6-3
Complying with EN61000-6-2, EN61000-6-3 and
NAMUR Recommendation NE21
Display Without With
Initialization Manual Automatic
Operation Using screws Using capacitive keys
Zero calibration Without
Automatic
(activated by P15 or P16)
Associated documentation uEB8313-1 uEB8313-3, uEB8394 or uT8394
1)
Versions with Type3730-x or Type3731-x Positioner on request
2)
Observe temperature range of mounted devices (positioner etc.).
3)
Maximum –35 to +90°C with Type373x-x Positioner and metal cable glands
4)
IP 65 only when the vent plug is replaced by a lter check valve (order no. 1790-7408)
5)
Other ratings possible when a Type373x-x Positioner is mounted. See corresponding mounting and operating instructions.