Signet 8750-1 Manual

‡ SIGNET 8750-1 pH/ORP Transmitter
3-8750.090-1
CAUTION!
• Remove power to unit before wiring input and
output connections.
• Follow instructions carefully to avoid personal injury.
1. Installation
ProcessPro transmitters are available in two styles: panel mount and field mount. The panel mount is supplied with the necessary
hardware to install the transmitter. This manual includes complete panel mounting instructions.
Field mounting requires a separate mounting kit. The 3-8050 Universal kit enables the transmitter to be installed virtually
anywhere. Detailed instructions for field installation options are included with the 3-8050 Universal kit.
1.1 Panel Installation
1. The panel mount transmitter is designed for installation using a 1/4 DIN Punch. For manual panel cutout, an adhesive
template is provided as an installation guide. Recommended clearance on all sides between instruments is 1 inch.
2. Place gasket on instrument, and install in panel.
3. Slide mounting bracket over back of instrument until quick-clips snap into latches on side of instrument.
4. To remove, secure instrument temporarily with tape from front or grip from rear of instrument. DO NOT RELEASE.
Press quick-clips outward and remove.
96 mm
(3.8 in.)
96 mm
(3.8 in.)
FRONT VIEW
Field Mount &
Panel Mount

2. Specifications

General
Compatible electrodes:
+GF+ SIGNET 3-27XX/2720 pH/ORP Preamplifier/Electrode
Accuracy: ± 0.03 pH, ± 2 mV ORP
Enclosure:
• Rating: NEMA 4X/IP65 front
• Case: PBT
• Panel case gasket: Neoprene
• Window: Polyurethane coated polycarbonate
• Keypad: Sealed 4-key silicone rubber
• Weight: Approx. 325g (12 oz.)
Display:
• Alphanumeric 2 x 16 LCD
• Contrast: User selected, 5 levels
• Update rate: 1 second
Electrical
Power: 12 to 24 VDC ±5%, regulated, 21 mA max.
•
Sensor input range:
• pH: 0.00 to 14.00 pH
• temp. 3K Balco, -25 to 120°C (-13 to 248°F)
• ORP: -1000 to +2000 mV, isolated
(10KΩ I.D. resistance T+, T-)
Current output:
• 4 to 20 mA, isolated, fully adjustable and reversible
‡ SIGNET 8750-1 pH/ORP Transmitter
C-3/01 English
82 mm
(3.23 in.)
106 mm
(4.18 in.)
SIDE VIEW
Field Mount
Contents
1. Installation
2. Specifications
3. Electrical Connections
4. Menu Functions
Optional
92 mm
Rear
(3.6 in.)
Cover
56 mm
41 mm
(2.2 in.)
)
(1.6 in.
97 mm
(3.8 in.)
SIDE VIEW
Panel Mount
Panel Mount Installation Detail
• Max loop impedance:
• Update rate: 0.5 seconds
Accuracy: ±0.03 mA @ 25°C, 24 V
•
Open-collector output:
• Isolated, 50 mA sink or source, 30 VDC max. pull-up voltage
• Programmable for:
• Hi or Lo w/adjustable hysteresis
• Proportional pulse (400 pulses per minute maximum)
Environmental
• Operating temperature: -10 to 70°C (14 to 158°F)
• Storage temperature:
• Relative humidity:
• Maximum altitude:
• Insulation category:
• Pollution degree:
Standards and Approvals
• CSA, CE, UL listed
• Immunity: EN50082-2
• Emissions: EN55011
• Safety: EN61010
• Manufactured under ISO 9001 and ISO 14001
ENGLISH
pH/ORP
10.20 pH
25.0°C
panel
gasket
terminals
latch
quick-clips
50 Ω max. @ 12 V
325 Ω max. @ 18 V
600 Ω max. @ 24 V
-15 to 80°C (5 to 176°F)
0 to 95%, non-condensing
2000 m (6562 ft)
II
2
page 1 of 12
ENTER
mounting
bracket