Table 1-1: Rosemount 975 Series general technical specifications
Spectral response Infrared and ultraviolet bands
Response time Varies according to model, typically under 5 seconds
Field of view Varies according to model, up to 100 degrees
Output 4-20 mA, relays, communication
Enclosure Stainless steel 316 or aluminum polyurethane painted
Operating voltage 18-32 VDC
Maximum power rating 9.6 W
Relay contacts 2A/30 VDC
Over voltage category 2
Relative humidity Non-condensing relative humidity up to 100%
Table 1-2: Typical current consumption
Typical current consumption 975MR 975HR 975UF 975UR
Normal power consumption
without heater- mA (Watts)
60 (1.4) 90 (2.2)
Normal power consumption
without heater with alarm - mA
(Watts)
90 (2.2) 120 (2.9)
Low power heater with alarm -
mA (Watts)
140 (3.4) 180 (4.3)
Standard power mode heater
with alarm - mA (Watts)
280 (6.7) 320 (7.7)
NOTICE
• If the product is used outside of specified limits, this voids the product certification, and
our company is not responsible for any incurred warranty expense.
• Do not open this product, except for the terminal compartment as listed in this
document, under any circumstances.
• The detector is not field-repairable. Do not attempt to modify or repair the internal
circuits or change their settings, as this will impair the system's performance and void
the product warranty.
• Opening the attachment screws to dismantle the front part of the detector from
remaining parts is restricted and voids the product warranty.
Introduction Manual
September2023 00809-1400-4975
8 Emerson.com
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