Technical Data - MR MESSKO COMPACT MT-ST160SK Manual Del Usuario

7 Maintenance
8 Circuit diagrams
6.3 Connecting the secondary current transformer
Connect the secondary current transformer (CT) to terminals
3 and 6 on the terminal strip (Fig. 3/1). The rated transformer
current may not exceed 2 A.
Example:
Gradient (in K):
Nominal CT current:
Heating current (see Fig. 7):
Resistor value (see Fig. 10):
Max. heating current
1,5A transformer current causes max. 1A heating current.
7 Maintenance
Regular maintenance is not required.
During the regular check of the transformer, we recommend
checking the following.
- Check the exterior of the installed device for damage.
CAUTION
The details made within these operating instructions are valid
for standard products only. For special designs refer to the
details of the nameplate as well as the order confirmation.
8

Technical data

Dimensions
Materials
Ring and casing:
Glass:
Temperature bulb:
Mounting plate:
Capillary tube:
Cable glands:
20
gr = 20K
I = 2A
w
I = 1,1A for MT-ST160W
H
(Tolerance I + 10%)
H
R = 6,6Ω für MT-ST160WR
(Tolerance R - 10%)
2,0A
refer to Fig. 13
Sheet steel, galvanised,
paint RAL 7033
Laminated safety glass
Brass, bright
Stainless steel
Copper capillary tube
with sheath
4x M25x1,5,
brass, nickel-plated
Specifications
Measuring ranges: -20...140°C
0........160°C
0........160°C
Tolerances:
Location:
Ambient temperature:
Degree of protection:
Ventilation:
Drag hand:
Microswitches
Number:
Rated current:
Switch positions:
Switching distance:
Switching hysteresis:
Contact materials:
Rated insulationvoltage:
Current output
Sensor:
Supply:
Output signal:
Maximum load:
Repeat accuracy:
Typ MT-ST160SK (TT),
Typ MT-ST160W (TT),
Typ MT-ST160W R(TT)
± 3°C according to EN 13190
class 1 and DIN16196
indoor and outdoor, tropics
-50 to 80 °C
IP55 in accordance with
IEC 60 529
Ventilation unit, no conden-
tion up to 80 % humidity
Resetable maximum pointer
1 to 6 adjustable
microswitches
5A at 250VAC (110VAC)
cosG=1
0,4A at 250VDC
0,6A at 110VDC
Refer to Fig. 11, others on
request
6% of measuring range
appr. 5°C
at decreasing temperatures)
Silver-Cadmium-Oxide
2500VAC/1min-switching
contacts and heating
circuit to ground
500VDC/1min-analog
output to ground
Load cell
DC: 12...30V unregulated,
maximum 10% residual ripple,
protected against
reverse polarity
4...20mA; two wire-technique
see Fig. 12
e.g. 750Ω for U =24V DC
b
≤ ± 0,1% at the
maximum value
BA 2038/02/07