Copyright HK Instruments, Inc. 2017
www.hkinstrumentsinc.com
Installation version 2.0 2017
INSTALLATION
INSTRUCTIONS
DIFFERENTIAL PRESSURE GAUGES
& MANOMETERS – MM Series
• READ THESE INSTRUCTIONS CAREFULLY BEFORE ATTEMPTING TO
INSTALL, OPERATE OR SERVICE THIS DEVICE.
• Failure to observe safety information and comply with instructions can result in
PERSONAL INJURY, DEATH AND/OR PROPERTY DAMAGE.
• To avoid electrical shock or damage to equipment, disconnect power before
installing or servicing and use only wiring with insulation rated for full device
operating voltage.
• To avoid potential fire and/or explosion do not use in potentially flammable or
explosive atmospheres.
• Retain these instructions for future reference.
• This product, when installed, will be part of an engineered system whose
specifications and performance characteristics are not designed or controlled
by HK Instruments. Review applications and national and local codes to assure
that the installation will be functional and safe. Use only experienced and
knowledgeable technicians to install this device.
Thank you for choosing an HK Instruments MM Series liquid col-
umn manometer. The MM Series is intended for use in commercial
environments for air and non-corrosive gases. The MM Series is
designed with overpressure reservoir to protect the manometer
liquid from leaking into the duct during over pressure.
The MM Series includes a field adjustable zero point calibration
and pressure limit stickers. The MM Series is available with op-
tional level bubble and NIST standard calibration certificates.
SPECIFICATIONS
Performance
Accuracy:
MM-0202
±0.004 inWC
MM-04
±0.004 inWC
MM-0420
-0.4–0 inWC
±0.02 inWC
0–2.0 inWC
±0.1 inWC
MM-00824
0–0.8 inWC
±0.02 inWC
0.8–2.4 inWC
±0.1 inWC
Overpressure:
Max Pressure: 800 inWC (200 kPa)
Technical Specifications
Media Compatibility:
Dry air or non-aggressive gases
Measuring units:
inWC
Measuring ranges:
-0.2–0–0.2 inWC
0–0.4 inWC
-0.4–0–2.0 inWC
0–0.8–2.4 inWC
Environment:
Operating temperature:
-40–140 °F (-40–60ºC)
Gauge fluid:
Red: s.g. 49.068 lb/ft3 (0.786 kg/dm
3
) (15 °C)
(Isopar M)
MM-0202 RED
MM-04 RED
MM-0420 RED
MM-00824 RED
Physical
Case:
ABS
Cover:
PMMA
Knobs:
Polycarbonate (PC)
O-ring:
Nitrile rubber (NBR)
Weight
14.82 oz (420 g)
Safety
Product equipped with integral reservoir to prevent
gauge fluid leakage during overpressure situation.
Product is tested and meets the NRTL product approval
requirements.
INTRODUCTION
WARNING
AVERTISSEMENT
• LISEZ ATTENTIVEMENT CES INSTRUCTIONS AVANT DE PROCÉDER À
L’INSTALLATION, LA MISE EN SERVICE OU L’ENTRETIEN DE CET APPAREIL.
• Le non-respect des informations et instructions de sécurité peut entraîner DES
DOMMAGES CORPORELS, LA MORT ET/OU DES DÉGÂTS MATÉRIELS.
• Afin d’éviter les chocs électriques et les dommages matériels, déconnectez
l’alimentation électrique avant l’installation ou l’entretien, et utilisez uniquement du
câblage avec isolement assigné pour une tension d’alimentation optimale.
• Afin de prévenir les risques d’incendie et/ou d’explosion, n’utilisez pas l’appareil
dans des environnements potentiellement inflammables ou explosifs.
• Conservez ces instructions à titre de référence.
• Une fois installé, ce produit fera partie d’un système technique dont les
spécifications et les caractéristiques de performance ne sont ni conçues ni
contrôlées par HK Instruments. Consultez les applications et les codes nationaux
et locaux pour garantir le fonctionnement correct et sûr de l’installation. Ne faites
appel qu’à des techniciens expérimentés et compétents pour installer cet appareil.
APPLICATIONS
MM series devices are commonly used in HVAC/R systems for:
• fan, blower and filter monitoring
• pressure and flow monitoring
• pressure monitoring in cleanrooms
RoHS 2
2011/65/EU
COMPANY WITH
MANAGEMENT SYSTEM
CERTIFIED BY DNV GL
= ISO 9001 = ISO 14001 =
