UK Product Handbook 2026 - Volume 1

Boiler house Energy monitor

2

Technical data for the B850 series flow computers (continued)

Enclosure (B850-W-2)

Enclosure type

Wall mounting, Polycarbonate material

217 mm x 257 mm x 134 mm (without cable glands) 238 mm x 257 mm x 134 mm (with conduit hub cULus version) 247 mm x 257 mm x 134 mm (with cable glands - non cULus version) 290 mm x 300 mm x 165 mm (in cardboard box)

Dimensions (height x width x depth)

Weight net (gross)

approx. 1.7 kg (cULus version 2.5 kg)

Protection class

IP65 Enclosure (B850-P-2)

2.12 8

Enclosure type

Panel mounting, Lexan Resin 920 material

110 mm x 206 mm x 63.5 mm (without terminals) 110 mm x 206 mm x 72 mm (with terminals) 135 mm x 230 mm x 110 mm (in cardboard box)

Dimensions (height x width x depth)

Panel cut-out dimensions

186 mm x 92 mm

Panel thickness

1 .. 5 mm

Weight net (gross)

approx. 0.6 kg (0.7 kg)

Protection class (front/rear)

IP65/IP20 Environmental conditions

Ambient temperature

0 .. +55 °C (32 .. 131 °F)

Relative humidity

5 .. 95% (non-condensing)

Altitude

≤ 2000 m (6 562 ft) above sea level

Storage temperature

-30 .. +70 °C

3 Panel version (when installed in an enclosure) 3 Wall version EN 61010-1 CAN/CSA-C22.2 No. 61010-1, 3rd Edition

Pollution degree

Electrical safety

Immunity EN 61326-1 Table 2 Radiated and conducted emissions EN61326-1 Group 1 Class B

EMC

Installation location

Indoor use only

TI-P408-01 EMM Issue 7

Page 8 of 9

B850 Boiler House Energy Monitor

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