Macurco 5100-88-IT Specsheet

Sentry IT Gas Sensor Module

IT Carbon Dioxide - Infrared

Proven Performance

Proven Technology

Proven Support

Information Technology (IT) at the component level!
An Infrared (IR) Carbon Dioxide Gas Sensor
Module is network-enabled to provide the interface
needed to your plant-wide control system, whether
it be 4-20 mA, Modbus, HART, relay contacts or
SentryBus. This USA-made, stand-alone smart gas
sensor module is loaded with features you need. As
usual, Sierra Monitor A gas detector with a Sierra
Monitor pedigree, Factory Mutual approved and
ready to Manage Your Gas Risk. The 5100-88-IT
provides all the built-in features desired by
instrumentation and safety professionals, including:

• Modbus RTU RS-485 interface

• 4-20 mA output

• HART interface

• SMC Sentry digital bus interface

• Optional Integral alarm relays – Alarm,
Warning and Trouble

• Aluminum or 316 Stainless Steel enclosure

• Annual calibration frequency

• Interface to multiple protocols

• Integral scrolling LED display

The 5100-88-IT can be used as a 4-20 mA
component or as a Modbus RTU node. For higher
level system capability the module can interface
directly to Sierra Monitor’s Sentry Controller. As
part of a Sentry system the user gains capability of
system Modbus serial communications, extensive
diagnostic features, area and zone alarm
management, WebServer interface and multiplexing
sensor connections.

How It Works

Carbon Dioxide absorbs infrared light energy at
defined wavelengths, providing an absorption
signature for CO

. The principle of an infrared

2

detector is based upon the absorption of the
infrared light at a specific wavelength as it passes
through the gas. The more of the absorbing gas
that is present, the more light is absorbed. The
detector measures the energy from an infrared light
beam at a wavelength that is absorbed by the gas
and compares it to the energy emitted by the
source. The difference in energy received by the
detector indicates the level of gas in the
atmosphere.

Features Benefits

 Non-intrusive calibration, menu driven system Able to easily and quickly calibrate module without

declassifying the area

 Network compatible with Modbus, 4-20mA, Sentry

bus, HART, relay interface

Easy to install in a variety of field applications plus
easy to obtain critical safety information wherever
needed

 Local scrolling display Ease of calibration and easy access to gas

concentration, relay status and diagnostics

Sierra Monitor Corporation 1991 Tarob Ct. Milpitas, CA 95035 [phone] [phone] Fax: [phone]

Web site: www.sierramonitor.com E-Mail: [e-mail]

IR Carbon Dioxide Gas Sensor Module

X

Specifications:

Sensor type: Infrared, Dual Wavelength
Performance

Range: 0-5000 PPM Carbon Dioxide
Repeatability: +/-1%
Accuracy: +/- 2%
Sensor Life: Typically >5 years
Heated Sensor: Heated cell to prevent condensation
Response Time: T60<20sec

Output:

Display: Fixed and Scrolling LED
Signal Outputs: Sentry digital bus
Analog 4-20 mA
3-wire Non-Isolated
4-wire Isolated
Serial RS-485 Modbus RTU
Relay : Optional

Options:

Relays: 5 amp Alarm, Warning (0.25 amp Trouble)
5A@ 250 VAC, 5A@ 30VDC (Alarm, Warning)
Board includes auxiliary connection for Sentry

multiplexing

HART: Termination board includes HART, Modbus RS-

485, 4-20mA, Digital Input, 2A Relay output, No
Sentry Bus

Power:
Power consumption: 3 watts
Input voltage: 24 VDC nominal: 10-30VDC

Operating Range:

Ambient Temp Range: -4
Relative Humidity: 0-99% Non-Condensing

Construction:

Dimensions: (H x W x D)
(A1) 7.8 x 5.7 x 3.9 in. (19.8 x 14.5 x 9.9 cm)
(A2) 8.1 x 4.8 x 4.9 in. (21 x 12 x 12 cm)
(S1 & S2) 7.5 x 4.4 x 4.9 in. (19 x 11 x 12 cm)
Weight:
(A1) 3.4 lb. (1.5 Kg)
(A2) 5.4 lb. (2.5 Kg)

(S1 & S2) 7.2 lb. (3.3 Kg)
Housing: Epoxy coated Aluminum or 316 Stainless Steel
Hazardous Area
Classification: Explosion proof, Class 1, Div. I, Groups B, C, D
Class I, Zone 1

Warranty: 2 years

Specifications subject to change without notice

Group IIC, IP66, IP65, NEMA 4X, T6
TA = - 40

o

to 140oF (-20o to 60oC)

o

C to 85oC II2 GD, Ex d IIC

Ordering Information:

Relay/Connection

Model Enclosure

Output

5100-88-IT - XX - XX -XX -

- A1 = AL ¾” NPT - 01 = No Relays (std) - 00 = Std. (0-5000 PPM) - 0 = Standard - 0 = None

- A2 = AL M20 x 1.5 - 02 = Relays Option - 81 = 0-5% Vol. - 2 = Conformal

- S1 = SS ¾” NPT - 05 = HART Option - 82 = 0-20% Vol. Transmitter

- S2 = SS M20 x 1.5

Accessories:

5311-00 Rainshield
5311-02 Rainshield with calibration port

Calibration Accessories:
5358-01 Calibration Head, Standard
5360-00 Calibration Gas Delivery Fitting

Calibrators High Capacity:
1250-01 Gas Sensor Calibration Kit, Type A
1260-80 2000 PPM CO

Gas Cylinder Type A

2

Sensor
Protection

- X

Remote Option

Rev. 1/14

Sierra Monitor Corporation 1991 Tarob Ct. Milpitas, CA 95035 [phone] [phone] Fax: [phone]

Web site: www.sierramonitor.com E-Mail: [e-mail]