Rosemount Analytical MCL Data sheet
Rosemount MCL Monochloramine System
LIQ-PDS-MCL
Product Data Sheet
July 2017
Rosemount
TM
MCL
Monochloramine System
A trusted system for making your monochloramine measurements
The RosemountTM MCL monochloramine system is a complete system suitable for measuring monochloramine in fresh water. The
system requires zero sample conditioning reagents.
Rosemount MCL Monochloramine System Rosemount MCL Monochloramine System
July 2017 July 2017
Overview
Ease of Use and Maintenance.
The Rosemount MCL features a Rosemount 499ACL-03
monochloramine sensor, a transmitter, and constant
head flow controller mounted on a backplate for easy
installation.
Integrated constant head flow controller eliminates the
need to install additional valves, rotameters, or pressure
regulators.
Easily replace and perform maintenance and calibration
on the sensor with quick-disconnect Variopol fittings.
Replacing sensor membrane and electrolyte solution
requires no special tools or fixtures and takes only
minutes.
Reliable Transmitter Options
Rosemount 56 and 1056 Transmitters are easy to use with
simple and intuitive programming and calibration.
Both transmitters have fully programmable analog
outputs and fully programmable alarm relays.
Contents
Ordering Information ........................................................................................................................................................................3
Specications ....................................................................................................................................................................................3
Dimensional Drawings .......................................................................................................................................................................6
Rosemount MCL-1056 Engineering Specication ...............................................................................................................................7
Rosemount MCL - 56 Engineering Specication ................................................................................................................................. 8
Component Parts ..............................................................................................................................................................................9
Accessories........................................................................................................................................................................................ 9
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Ordering Information
The Rosemount MCL Monochloramine System consists of a sensor, a
transmitter, quick-disconnect Variopol cable, and constant head flow
controller. All components are mounted on a backplate, and the cable is
pre-wired to the transmitter. Three replacement membranes and a 4 oz
(120 mL) bottle of electrolyte solution are shipped with the sensor.
Table 1. Rosemount MCL Monochloramine System Ordering Information
Model Sensor type
MCL Monochloramine System
Transmitter
220 Rosemount 1056 transmitter, single input, with alarm relays (1056-03-24-38-AN)
240 Rosemount 56 Transmitter, single input (56-03-24-38-HT)
Typical model number: MCL-240
Specifications
Table 2. General Specifications
General
Sample conductivity > 10 µS/cm at 25 °C (77 °F)
Process connection 1/4 in. OD tubing compression fitting (can be removed and replaced with barbed fitting
for soft tubing).
Drain connection 1/4 in. barbed fitting. Sample must drain to open atmosphere.
Wetted parts Acrylic, nylon, polycarbonate, polyester, Kynar1, silicone, Noryl2, Viton3, silicone, and
Zitex4, PTFE , (gold mesh cathode - not normally wetted)
Response time to step change in monochloramine
concentration
Weight/shipping weight (rounded up to the nearest 1
lb or 0.5 kg)
Sample requirements
Pressure 3 to 65 psig (122 to 549 kPa abs). Inlet check valve opens at 3 psig (122 kPa abs). If the
Flow 3 to 80 gal/hr (11 to 303 L/hr)
Temperature 0 to 50 °C (32 to 122 °F)
1. Kynar is a registered trademark of Elf Atochem North America.
2. Noryl is a registered trademark of General Electric.
3. Viton is a registered trademark of E.I. duPont de Nemours & Co.
4. Zitex is a registered trademark of Performance Plastic Corp.
<60 sec to 95% of final reading for inlet sample flow of 17 gph (64 L/hr)
10 lb/143 lb (4.5 kg/6.0 kg))
check valve is removed, minimum pressure is 1 psig (108 kPa abs).
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Rosemount MCL Monochloramine System Rosemount MCL Monochloramine System
July 2017 July 2017
Table 3. Sensor Specifications
Range 0 to 6 ppm as Cl2. For higher ranges, consult the factory.
pH range Signal is practically independent of pH between pH 7.0 and 10.0. Sensor current at pH
10.0 is within 5% of sensor current at pH 7.0.
Accuracy Accuracy depends on the accuracy of the chemical test used to calibrate the sensor.
Linearity 2% (typ.)
Interferences Free chlorine and other oxidizing agents
Electrolyte volume 25 mL (approx.)
Electrolyte life 2 months (approx.)
Table 4. Rosemount 1056 Transmitter Specifications
Display Monochromatic back-lit LCD. Main character height 0.6 in. (15 mm). Display is user-programmable.
Languages English, French, German, Italian, Spanish, Portuguese, and Chinese
Ambient temperature and humidity 0 to 55 °C (32 to 131 °F); relative humidity 5 to 95% (non-condensing)
Storage temperature -20 to 60 °C (-4 to 140 °F)
Power 85 to 265 Vac, 47.5 to 65.0 Hz, switching, 15 W
Equipment protected by double insulation.
RFI/EMI
LVD
Alarms Four alarm relays. Any relay can be configured as a fault alarm instead of a process alarm. Each relay can be
Conduit openings Accepts PG 13.5 or 1/2 in. conduit fittings
Terminal connections rating Power connector (3-leads): 18-12 AWG wire size. Current output connectors (2-leads): 24-16 AWG wire
Relay contact ratings
Relays Form C, SPDT, epoxy sealed
Case Polycarbonate NEMA 4X/CSA 4 (IP65)
Hazardous location approvals For more information, refer to the Rosemount 1056 product data sheet. Approvals apply to the transmit-
EN 61326
EN 6101-01
configured independently, and each can be programmed with interval timer settings.
size. Alarm relay terminal blocks: 18 - 16 AWG wire size
5A at 28 Vdc or 300 Vac (resistive)
1/8 HP at 120/240 Vac
ter only. The MCL is not suitable for use in hazardous areas.
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