FCC ID: OWS-IMU516 RF Module for Utility Gas Meter

Single Channel Rotary and Turbine Meter IMU Installation April 6, 2011 innovation in utility networking Overview Connect the pulser and IMU cables Connect the IMU battery cable Configure the IMU for field use Attach the mounting plate and the cover to the IMU enclosure Attach the IMU and mounting plate to the pipe or wall 2010 Silver Spring Networks | Company Confidential 2 Safety First!

Always follow applicable standards for safety!

Refer to the meter documentation for further safety information. Follow your employers best practices. If you smell gas, report it to the utility. Do not use power tools!

2010 Silver Spring Networks | Company Confidential 3 RF Exposure Notice (509) The antenna of this transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. The device should be installed so that people will not come within 20 cm (8 in.) of the antenna. This equipment has been tested and found to comply with Part 15 of the FCC Rules, and with Industry Canada licence-exempt RSS standard(s). This equipment generates, uses and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver disconnected. Consult the dealer or an experienced Radio/TV technician for help. Modifications to the IMU not expressly approved by Silver Spring Networks may void your authority to operate the IMU. 2010 Silver Spring Networks | Company Confidential 4 Components and Tools Components:

Component Qty. Part Number SSN IMU (top level, includes hardware) 1 224-040001 See next page for hardware component detail Tools:

Flathead screw driver (capable of torque setting) Phillips screw driver (capable of torque setting) Pliers Nut driver Service magnet 2010 Silver Spring Networks | Company Confidential 5 Service magnet Components Screws 10-24 x 1/2 Tamper Seals Mounting Plate Flanged nut 10-24 Pipe clamp Cover screws, 6-32 x 1 2010 Silver Spring Networks | Company Confidential 6 Assembly Drawing (Single Channel Rotary and Turbine Meter IMU) 2010 Silver Spring Networks | Company Confidential 7 Assembly Drawing (Single Channel Rotary and Turbine Meter IMU) 2010 Silver Spring Networks | Company Confidential 8 Inspect the Pulser Cable Inspect the end of the pulser cable that will connect to the IMU. There should be three wires exiting the outside insulation. The red and black wires are insulated. The 3rd wire is bare coming out of outside insulation, with a white sleeve on the end. If needed, trim the pulser wires so the conductor is flush with the insulation and sleeve. Insert photo Pulser installation onto the gas meter is not covered here. Refer to the pulser manufacturers installation instructions. 2010 Silver Spring Networks | Company Confidential 9 Inspect the IMU Verify that the IMU has 3 wires Verify that the enclosure is not cracked and that the MAC Address label is present Verify that the battery connectors are undamaged. Verify If the IMU is damaged, return it to your supervisor and get a replacement. 2010 Silver Spring Networks | Company Confidential 10 Connect the Pulser to the IMU Thread the pulser cable through the cable seal connector. Thread the pulser cable through the tie wrap. Connect the 3 cables with the gel splices. Do not strip the insulation from the wires. Insert the wire pair (red and red, black and black, white and white) to be connected into a gel splice; push all the way forward. Close the gel splice by squeezing the gel splice with pliers. Repeat for the 3 pairs of wires 2010 Silver Spring Networks | Company Confidential 11 Connect the Pulser to the IMU Make sure the 3 gel splices are to the right of the cable tie. Tighten the cable tie. This provides extra strain relief for the cable. Trim the cable tie. Leave 1 of cable slack inside the IMU, and pull the rest of the cable out of the cable seal connector. Tighten the cable seal connector. 2010 Silver Spring Networks | Company Confidential 12 Connect the Battery Cable Connector Connect the battery cable to the IMU cable. The connectors are keyed; you will not need to force them together. Put the battery inside the battery compartment as shown. The connector fits underneath the battery. The flat part of the battery should be next to the inside wall. 2010 Silver Spring Networks | Company Confidential 13 Program the IMU for Field Use Slowly pass the service magnet once (for 2 to 5 seconds) over the top of the IMU. Watch for the light-emitting diode

(LED) to flash on the lower left corner of the IMU circuit board If you dont see the LED flash, make sure the battery cable connections are made. If you still dont see the LED flash after checking that all the battery connections are made and re-

swiping the magnet, return the IMU to your supervisor. Insert photo Configure the IMU with the programming tool. (Field Configuration is a separate document). 2010 Silver Spring Networks | Company Confidential 14 Inspect the Gasket and Fasten the Cover Re-inspect the gasket to ensure it seals the area between the enclosure and cover. Insert photo Fasten the cover to the enclosure with the 4 cover screws. The Silver Spring logo faces up Torque the cover screws to xxx Use a nut driver to push two tamper seals into the openings on the IMU cover. 2010 Silver Spring Networks | Company Confidential 15 Attach the IMU Enclosure to the Mounting Plate Determine where you want to install the IMU. This will determine if the plate should attach to the pipe horizontally or vertically. The photos here show a vertical attachment. Attach the IMU enclosure to the mounting plate with the 2 screws and 2 flanged nuts. Torque the screws to 2010 Silver Spring Networks | Company Confidential 16 Attach the IMU and Mounting Plate to the Pipe Guide the metal clamp through the slot in the mounting plate. Wrap the metal clamp around the pipe. Tighten the metal clamp around the pipe by torquing the screw to 12-20 in lb. 2010 Silver Spring Networks | Company Confidential 17

IMU-200 Remote Mount Pulser Wiring Information Rev. 01, February 25, 2011 1 Overview This document is intended to describe the wiring of the IMU-200 Remote Mount Module to various partner devices. Internally these projects are referred to as ComGas 1 and ComGas 2. The ComGas 1 consists of a Remote Mount IMU connected to a Riotronics pulser with a tamper interface. The ComGas 2 connects a Remote Mount IMU to a Mercury Corrector Unit, with support for tamper and 2 channels of data, both uncorrected and corrected. This requires 4 channels of input data to the IMU and tamper detection. Doc:

Silver Spring Networks - Confidential and Proprietary Page 1 of 4 2 Architecture The Remote Mount IMU pulse input is compatible with a Form A (normally open) switch. The voltage to the input is provided by an internal pull-up as shown in Figure 1. The voltage and timing for a valid input pulse to the Remote Mount IMU is shown in Table 1 and Figure 2. Figure 1 Pulse Input Electrical Diagram Table 1 Pulse Electrical Parameters Spec VBAT VIL VIH tFall tLow tRise tPeriod Nom. 2.1V

Min. 1.9V

-0.5V 1.5V

15 ms

500 ms Figure 2 Pulse Diagram Max. 2.14V 0.36V 2.3V 10 ms 100ms 140 ms

Doc:

Silver Spring Networks - Confidential and Proprietary Page 2 of 4 2.1 Connection Definitions The Remote Mount IMU has been tested with two devices to support current customer needs. These devices are the Riotronics PS4 model and the Mercury Corrector. Signal connections to each of the devices are shown in Table 2. Table 2 PCBA Connections Pin 1 2 3 4 5 6 7 8 9 10 IMU-300 Pulse IN Ch. 1 Ground Pulse IN Ch. 2 Ground Pulse IN Ch. 3 Ground Pulse IN Ch. 4 Ground Tamper+

Tamper-

Riotronics PS4 Pulse Out Ground N/C N/C N/C N/C N/C N/C Tamper N/C Mercury Corrector Pulse Out Ch. A +

Ground Pulse Out Ch. B +

N/C Pulse Out Ch. A Corrected +

N/C Pulse Out Ch. B Corrected +

N/C Tamper +

N/C 2.1.1 Riotronics PS4 The Riotronics PS4 is a single channel form A switch with tamper detection. The wire definitions for the Riotronics PS4 is as follows:

Table 3 PCBA Connections Pin 1 2 3 Signal Pulse Out Ground Tamper Wire Red Black Bare wire w/ wire end sheath 2.1.2 Mercury Corrector The Mercury Corrector uses differential channels for each of the signals, meaning that there is a Pulse Out Ch. A + and a Pulse Out Ch. A -. All of the negative or return path signals should be connected together at the Mercury Corrector unit and connected to the Ground wire on the cable to the Remote Mount IMU. Doc:

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