Specifications

_{Source: Intuition-6 Instruction Manual Rev. H, Pages: 3–10}

Internal view of Intuition-6 controller showing sensor input cards, relay board, and terminal blocks — Internal component layout

Measurement Performance

Use these tables to confirm sensor ranges and accuracy.

Contacting Conductivity

Cell Constant	Range	Resolution	Accuracy
0.01	0-300 µS/cm	0.01 µS/cm	±1% of reading or 0.01 µS/cm
0.1	0-3,000 µS/cm	0.1 µS/cm	±1% of reading or 0.1 µS/cm
1.0	0-30,000 µS/cm	1 µS/cm	±1% of reading or 1 µS/cm
10.0	0-300,000 µS/cm	10 µS/cm	±1% of reading or 10 µS/cm

Electrodeless Conductivity

Range	Resolution	Accuracy
500-12,000 µS/cm	1 µS/cm	±1% of reading
3,000-40,000 µS/cm	1 µS/cm	±1% of reading
10,000-150,000 µS/cm	10 µS/cm	±1% of reading
50,000-500,000 µS/cm	10 µS/cm	±1% of reading
200,000-2,000,000 µS/cm	100 µS/cm	±1% of reading

Conductivity ranges apply at 25°C. At higher temperatures, the effective range is reduced. For example, at 100°C the range is approximately 36% of the 25°C value.

pH Measurement

Parameter	Value
Range	-2 to 16 pH units
Resolution	0.01 pH units
Accuracy	±0.01% of reading

ORP Measurement

Parameter	Value
Range	-1500 to 1500 mV
Resolution	0.1 mV
Accuracy	±1 mV

Disinfection Sensors

Parameter	Value
Range (mV)	-2000 to 1500 mV
Resolution (mV)	0.1 mV
Accuracy (mV)	±1 mV
Range (ppm)	0-2 ppm to 0-20,000 ppm (sensor dependent)

Temperature Measurement

Sensor Type	Range	Resolution	Accuracy
100Ω RTD	23-500°F (-5 to 260°C)	0.1°F	±1% or ±1°C
1000Ω RTD	23-500°F (-5 to 260°C)	0.1°F	±1% or ±0.3°C
10K/100K Thermistor	23-194°F (-5 to 90°C)	0.1°F	±1% or ±0.3°C

Analog Input (4-20 mA)

Parameter	Value
Range	0-22 mA
Resolution	0.01 mA
Accuracy	±0.5% of reading

Electrical Specifications

Review power and wiring requirements before installation.

Power Supply

Parameter	Value
Input Voltage	100-240 VAC ±10%
Frequency	50/60 Hz
Maximum Current	7 A
Fuse	6.3 A

Sensor Inputs

Input Type	Specification
Contacting Conductivity	0.01, 0.1, 1.0, or 10.0 cell constant
Electrodeless Conductivity	Dedicated sensor card required
pH/ORP/ISE	Requires preamplified signal (WEL or WDS series)
Temperature	100Ω or 1000Ω RTD, 10K or 100K thermistor
4-20 mA Analog	2, 3, or 4-wire transmitters supported

Analog Input Power Budget

Each 4-20 mA input channel provides isolated 24 VDC ±15% power:

Maximum 2.0 W (83 mA) per channel
Total power consumption limited based on ambient temperature

Total Watts (All Channels)	Maximum Ambient Temperature
2 W	50°C (122°F)
4 W	45°C (113°F)
6 W	40°C (104°F)
8 W	35°C (95°F)

Digital Inputs

The controller provides six digital input channels:

Input Type	Specification
State-Type	Optically isolated, 9 VDC, 2.3 mA, <2 sec response
Low Speed Counter	0-20 Hz, 25 ms minimum pulse width
High Speed Counter	0-500 Hz, 1.0 ms minimum pulse width

Total available 9 VDC power: 111 mA across all digital inputs.

Relay Outputs

Output Type	Rating
Powered Mechanical Relays	6 A resistive, 1/8 HP (93 W), fused as group
Dry Contact Mechanical Relays	6 A resistive, 1/8 HP (93 W), not fused
Pulse Solid State Opto	200 mA, 40 VDC max

Pulse output accuracy:

0-10 Hz: ±0.5% of pulse rate
10-20 Hz: ±1.0%
20-40 Hz: ±2.0%

Analog Outputs (Optional)

Parameter	Value
Type	4-20 mA, internally powered
Isolation	Fully isolated
Load	600 Ω maximum resistive
Resolution	0.0015% of span

Communication

Interface	Specification
Ethernet	10/100 802.3-2005, Auto MDIX, Auto Negotiation
USB	Type A, High speed (480 Mbit), 0.5 A max
Protocols	Modbus TCP, BACnet (optional)

Mechanical Specifications

Parameter	Value
Enclosure Material	Polycarbonate
Enclosure Rating	UL 50 Type 4X, IP66
Dimensions	11.1” x 8.3” x 5.5” (282 x 211 x 140 mm)
Display	5” TFT color, 800 x 480 pixels, capacitive touchscreen
Weight	Approximately 5 lbs (2.3 kg)

Environmental

Parameter	Value
Operating Temperature	-4 to 131°F (-20 to 55°C)
Storage Temperature	-4 to 176°F (-20 to 80°C)
Humidity	10-90% non-condensing
Altitude	2000 m (6560 ft) maximum
Pollution Degree	2
Overvoltage Category	II
Installation	Indoor and outdoor, suitable for wet locations

Mounting Clearances

Side	Clearance Required
Top	2” (50 mm)
Left	8” (203 mm) — not applicable for prewired models
Right	4” (102 mm)
Bottom	7” (178 mm)

Agency Approvals

Use this section for compliance and certification references.

Safety

UL 61010-1:2012 3rd Ed + Rev:2019
CSA C22.2 No. 61010-1:2012 3rd Ed. + U1; U2
IEC 61010-1:2010 3rd Ed. + A1:2016
EN 61010-1:2010 3rd Ed. + A1:2019

EMC

IEC 61326-1:2020
EN 61326-1:2013

For EN 61000-4-3 Radiated RF Immunity, the controller meets Performance Criteria B. In environments with severe radio-frequency interference, the controller may reboot. Relocate the controller away from EMI sources if this occurs.

Sensor Specifications

Reference these limits when selecting sensor materials and fittings.

Pressure and Temperature Ratings

Graph showing maximum pressure vs temperature for pH/ORP, Fluorometer, Conductivity, HP Conductivity/Steel, and HP pH/ORP/Steel sensors — Sensor pressure/temperature derating curves

Sensor Type	Max Pressure	Max Temperature	Materials
Electrodeless Conductivity	150 psi	CPVC: 158°F, PEEK: 190°F	CPVC or PEEK, FKM o-ring
pH	100 psi	158°F	CPVC, Glass, FKM, HDPE
ORP	100 psi	158°F	CPVC, Glass, FKM
Contacting Cond. (Cooling Tower)	150 psi	158°F	Graphite or 316SS, PP
Contacting Cond. (Boiler)	250 psi	401°F	316SS, PEEK
Contacting Cond. (High Pressure)	300 psi	158°F	316SS, PEEK
High Pressure pH/ORP	300 psi	275°F	Glass/Platinum, 316SS, FKM
Disinfection Sensors	14.7 psi	113-131°F	PVC, Polycarbonate, PEEK

Pressure ratings decrease with increasing temperature. Always verify sensor compatibility with your process conditions using the pressure/temperature derating curves in the full manual.

Battery

Parameter	Value
Type	BR2032, 3V Lithium Coin Cell
Size	20 mm diameter
Function	Real-time clock backup

Sources

Intuition-6 Instruction Manual Rev. H

Pages 3–10 • February 2024

Get Started

Product Support

Specifications

Specifications

Measurement Performance

Contacting Conductivity

Electrodeless Conductivity

pH Measurement

ORP Measurement

Disinfection Sensors

Temperature Measurement

Analog Input (4-20 mA)

Electrical Specifications

Power Supply

Sensor Inputs

Analog Input Power Budget

Digital Inputs

Relay Outputs

Analog Outputs (Optional)

Communication

Mechanical Specifications

Environmental

Mounting Clearances

Agency Approvals

Safety

EMC

Sensor Specifications

Pressure and Temperature Ratings

Battery

Sources

Intuition-6 Instruction Manual Rev. H

​Specifications

​Measurement Performance

​Contacting Conductivity

​Electrodeless Conductivity

​pH Measurement

​ORP Measurement

​Disinfection Sensors

​Temperature Measurement

​Analog Input (4-20 mA)

​Electrical Specifications

​Power Supply

​Sensor Inputs

​Analog Input Power Budget

​Digital Inputs

​Relay Outputs

​Analog Outputs (Optional)

​Communication

​Mechanical Specifications

​Environmental

​Mounting Clearances

​Agency Approvals

​Safety

​EMC

​Sensor Specifications

​Pressure and Temperature Ratings

​Battery

​Sources

Intuition-6 Instruction Manual Rev. H

Specifications

Measurement Performance

Contacting Conductivity

Electrodeless Conductivity

pH Measurement

ORP Measurement

Disinfection Sensors

Temperature Measurement

Analog Input (4-20 mA)

Electrical Specifications

Power Supply

Sensor Inputs

Analog Input Power Budget

Digital Inputs

Relay Outputs

Analog Outputs (Optional)

Communication

Mechanical Specifications

Environmental

Mounting Clearances

Agency Approvals

Safety

EMC

Sensor Specifications

Pressure and Temperature Ratings

Battery

Sources