Dimensions - bürkert 8138 Bedienerführung

Voltage supply
Operating voltage U
B
Ʋ Non-Ex instrument
Ʋ Ex-ia instrument
Operating voltage U
B
Ʋ Non-Ex instrument
Ʋ Ex-ia instrument
Reverse voltage protection
Permissible residual ripple - Non-Ex, Ex-ia instrument
Ʋ for 9.6 V< U < 14 V
B
Ʋ for 18 V< U < 36 V
B
Load resistor
Ʋ Calculation
Ʋ Example - Non-Ex instrument with
U = 24 V DC
B
Electrical protective measures
Protection rating
Overvoltage category
Protection class
Approvals
Instruments with approvals can have deviating technical data (depending on the version). For such
instruments, the corresponding approval documents must be noted.

11.2 Dimensions

Plastic housing
Fig. 37: Housing versions in protection IP 66/IP 68 (0.2 bar) - with integrated display and adjustment module the
housing is 9 mm/0.35 in higher
1 Housing without display and adjustment module
2 Housing with transparent cover for display and adjustment module
IEC 61010-1
5)
IEC 61010-1
6)
LEVEL TRANSMITTER 8138 • 4 ... 20 mA/HART - two-wire
- illuminated display and adjustment module
~ 76 mm
(2.99")
ø 91 mm
(3.58")
M20x1,5/
½ NPT
1
9.6 ... 36 V DC
9.6 ... 30 V DC
16 ... 36 V DC
16 ... 30 V DC
Integrated
≤ 0.7 V (16 ... 400 Hz)
eff
≤ 1.0 V (16 ... 400 Hz)
eff
(U - U )/0.022 A
B min
(24 V - 9.6 V)/0.022 A = 655 Ω
IP 66/IP 67 (NEMA 4X)
III
5)
III
6)
~ 76 mm
(2.99")
M20x1,5/
½ NPT
ø 91 mm
(3.58")
2
11 Supplement
59