diff --git a/NRS11/globalAttributes_NRS11.yaml b/NRS11/globalAttributes_NRS11.yaml
index b48f10b..8f588fa 100644
--- a/NRS11/globalAttributes_NRS11.yaml
+++ b/NRS11/globalAttributes_NRS11.yaml
@@ -31,10 +31,10 @@ time_coverage_end: AUTOPOPULATE
 time_coverage_duration: P1D
 time_coverage_resolution: P60S
 platform: NOAA NRS11 mooring
-instrument: "AUH model ITC-1032, SN {{serial_number}}"
+instrument: "AUH model ITC-1032, SN H23"
 cdm_data_type: TimeSeries
 references: >-
   Computation of single-sided mean-square sound pressure spectral density with 1 Hz resolution
   followed ISO 18405 3.1.3.13 (International Standard ISO 18405:2017(E), Underwater Acoustics – Terminology.  Geneva: ISO).
   Hybrid millidecade band processing followed Martin et al. (2021a,b:  https://doi.org/10.1121/10.0003324;
-  https://doi.org/10.1121/10.0005818)
\ No newline at end of file
+  https://doi.org/10.1121/10.0005818)