Special Instructions; Specifications - HBM VKK2R-8 Ex Bedienungsanleitung

VKK2R-8 Ex
8

Special instructions

For other test loads types (e.g. building site vehicle testing), the user can
extend the chart by drawing an additional line between the zero point and the
actual test load used.
N
OTE
The bases for calculation described in this section for corner load
balancing and appearing in the form of a chart, a table or a formula,
apply to load cells with a symmetrical output voltage. In practice, the
balancing effect may differ from the target value, depending of the type
of load cell involved. In this case, you will have to use empirical values
for balancing.
9

Specifications

Type
Resistor network for corner load balancing
Max. permissible voltage
Nominal temperature range
Operating temperature range
Storage temperature range
Interference immunity check
Electromagnetic field (26...1000 MHz)
Burst (to connected cables)
Electrostatic discharge (to housing)
Weight, approx.
Max. wire cross section of cable strands
Degree of protection
according to EN 60529
(IEC 529)
Materials: Housing
Screwed cable gland:
Sleeve nut
Clamping cone
A1552-4.1 en/de
VKK2R-8 Ex
Zone1; 2; 21; 22
Ω
0.22...5.93 (in 31 steps)
V 12
−20...+70 [−4...+158]
°C °C
−20...+70 [−4...+158]
[°F] [ F]
−40...+85 [−40...185]
V/m
V
V
kg
2
mm
IP65 (dust-tight and protected against
stainless steel
7x M12, a.f.14; 2x M16, a.f.17
nickel-plated brass
for cable ∅ 5...9 mm with M16 x 1.5
for cable ∅ 5...6.5 mm with M12 x 1.5
Zone1, 21, 22
(intrinsic safety)
22
10
1000
6000
1
1.5
water jets)
Neoprene,
15
HBM